Bill Saathi: Simplifying Billing for Small Business Owners

Theta Solutions built Bill Saathi, a billing platform for small business owners in India who previously kept books on paper or in Excel. It generates bills, records transactions and expenses, and reports profit and loss in real time on web, Android and iOS, and is designed for owners with no technical background. It began in the textile industry's job work sector and has since been taken up by other business types.

Platform

Web, Android, iOS

Industry

SaaS, Billing Solutions

Location

India

Services

SaaS Product Development, MVP Development, UI/UX Design

Published

1 March 2025

Updated 18 August 2026

Project Overview

Bill Saathi is a SaaS billing platform Theta Solutions built for small business owners in India. Its users kept billing and transaction records on pen and paper or in Excel, which cost them time, introduced errors, and meant checking profit and loss required searching physical records or consulting an accountant. Bill Saathi generates bills, records expenses and transactions, and holds customer data, presenting profit and loss and outstanding payments in real time. It runs on web, Android and iOS, and its interface is built for owners with no technical background. It was designed first for the textile industry's job work sector and has since expanded to other business types.

Manual Billing and Bookkeeping

Business owners were managing billing and transactions using pen and paper or Excel, leading to errors and inefficiencies.

Time-Consuming Processes

Manual bookkeeping was taking up too much time, preventing business owners from focusing on growth and operations.

Expense Tracking Difficulties

Tracking expenses and payments manually made it difficult to maintain accurate records and calculate business performance.

Delayed Access to Data

Business owners lacked real-time insights into profit and loss, requiring them to physically search through records or consult accountants.

Key Features of Bill Saathi for Billing and Business Management

Explore the key features designed to simplify billing, expense management, and business operations for small business owners.

Multi-Business Management: Admins can manage multiple businesses under one platform, with personalized layouts and configurations for each business.

Expense and Payment Tracking: Keep track of all expenses, purchases, sales, and payments made, providing a full financial overview in real-time.

Business Insights Dashboard: Admins can view a dashboard with insights into profit and loss, outstanding payments, and other key metrics.

Mobile App

We developed a mobile app for Android, making billing and expense management accessible to small business owners on the go. The Android app offers features like automated billing, real-time expense tracking, and PDF report generation, ensuring users can manage their business anytime, anywhere.

Web Application

The web platform for Bill Saathi allows business owners to manage billing, expenses, and operations from their desktops. With real-time financial insights, multi-business management, and an easy-to-use dashboard, the web app provides full control and flexibility over business operations.

Technologies and Platforms We Used

Flutter

Android

iOS

ReactJS

NextJS

HTML

CSS

Need a Custom Billing Solution?

Frequently Asked Questions

See the answers to some of our most commonly asked questions below.

Yes, Bill Saathi is designed to be user-friendly, with a simple interface that even non-tech-savvy users can easily navigate and use.

Yes, Bill Saathi allows users to manage multiple businesses with customized layouts and configurations for each business.

Bill Saathi automatically calculates GST and other applicable taxes, ensuring compliance and making tax filing simpler for users.

Yes, Bill Saathi allows you to track daily expenses, categorize them, and generate expense reports for better financial control.

Yes, you can generate professional PDF reports for bills and transactions, and easily share them via WhatsApp or email.

Yes, Bill Saathi is designed to be flexible and scalable, catering to various industries and business types with customizable features.

Yes, Bill Saathi is available on both Android and iOS platforms, making it accessible across all devices.

Bill Saathi is ideal for small business owners across various industries, including textile, retail, and services, who want to simplify billing and transaction management.

Bill Saathi uses cloud infrastructure like AWS and Firebase to ensure data security, with encrypted storage and secure access for users.

Bill Saathi integrates with payment gateways like Razorpay to allow seamless online payments for bills and transactions.

The conclusion

Bill Saathi transformed how small businesses manage billing, expenses, and transactions, providing a simple yet powerful platform for non-tech users. By automating key processes, the platform improves operational efficiency and provides real-time financial insights for business owners.

Bill Saathi has made billing and expense management so easy for our business. We no longer rely on manual processes, and the real-time data helps us make better financial decisions. The platform is incredibly user-friendly!

Sanjay D.